Lipids

1. 1Lipids are identified on the fact that they are soluble in [blank_start]organic solvents[blank_end], but insoluble in [blank_start]water[blank_end].

   1. Aorganic solvents
   2. Bwater
2. 2Lipids contain a large number of carbon-carbon and carbon-hydrogen bonds. This means they are [blank_start]non-polar[blank_end] molecules.

   1. Anon-polar
3. 3[blank_start]Hydrolyzable[blank_end] and [blank_start]Non-hydrolyzable[blank_end] are the two categories of lipids.

   1. AHydrolyzable
   2. BNon-hydrolyzable
4. 4Waxes and phospholipids are able to be broken into smaller molecules via [blank_start]hydrolysis[blank_end].

   1. Ahydrolysis
5. 5Naturally occuring fatty acids have an [blank_start]even[blank_end] number of carbon atoms.

   1. Aeven
6. 6The relationship between number of double bonds and the melting point of a fatty acid:
   As the number of double bonds [blank_start]inc[blank_end]-reases the melting temperature [blank_start]dec[blank_end]-reases.

   1. Ainc
   2. Bdec
7. 7Waxes are [blank_start]esters[blank_end] formed from the reaction of a fatty acid and an [blank_start]alcohol[blank_end].

   1. Aesters
   2. Balcohol
8. 8Fats have a higher melting point compared to oils because they have [blank_start]less[blank_end] double bonds in their structure.

   1. Aless
9. 9Which type of phospholipid does not contain a glycerol backbone? [blank_start]_______[blank_end]

   1. ASphingomyelin
10. 10[blank_start]Steroids[blank_end] are a class of lipids that are characterized by having a carbon skeleton consisting of 3 six-membered rings and 1 five-membered ring.

    1. ASteroids

11. 11Lipids contain a large number of Carbon-[blank_start]Carbon[blank_end] and Carbon-[blank_start]Hydrogen[blank_end] bonds.

    1. ACarbon
    2. BHydrogen
12. 12Steroids and fat-soluble vitamins are able to be converted into smaller molecules via hydrolysis

    1. ATrue
    2. BFalse
13. 13Triacylglycerols and waxes are able to be converted into smaller molecules via hydrolysis.

    1. ATrue
    2. BFalse
14. 14The 'n' in omega-n fatty acid refer to the carbon where the first double-bond occurs from the [blank_start]omega[blank_end] end of the fatty acid chain

    1. Aomega
15. 15Triacylglycerols are formed from bonding a [blank_start]glycerol[blank_end] and 3 molecules of [blank_start]fatty acids[blank_end].

    1. Aglycerol
    2. Bfatty acids
16. 16Lipids are defined on the basis of physical property rather than by the presence of a particular functional group

    1. ATrue
    2. BFalse
17. 17Which category of lipids is able to be converted into smaller molecules by hydrolysis with water? [blank_start]Hydrolyzable[blank_end]

    1. AHydrolyzable
18. 18Lipids release more than [blank_start]2[blank_end] times as much energy compared to that of both carbohydrates and proteins.

    1. A2
19. 19The primary characteristic of unsaturated fatty acids that it has at least [blank_start]1[blank_end] double bond/s.
    Whereas, saturated fatty acids have [blank_start]0[blank_end] double bonds.

    1. A1
    2. B0
20. 20Waxes are very hydrophobic. This is due to the [blank_start]non-polar chains[blank_end] in their molecular structure.

    1. Anon-polar chains
21. 21Fats and oils are both [blank_start]triacyglycerols[blank_end], but [blank_start]oils[blank_end] have a larger number of double bonds in their chemical structure than [blank_start]fats[blank_end] do.

    1. Atriacyglycerols
    2. Boils
    3. Cfats
22. 22A higher number of double bonds in a fatty acid means a [blank_start]lower[blank_end] melting temperature for it.
    
    

    1. Alower

Description

Biological Chemistry Quiz on Lipids, created by Alana Davey on 24/11/2017.

Author

Alana Davey

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English

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biological chemistry

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